DETERMINATION OF
FLUE GAS OUTLET
AND CHIMNEYS
UDLÆGNING AF
RØGGASAFGANG
OG SKORSTENE
Flue Gas Outlet & Chimney
Røggasafgang & Skorsten

Recommended values in arrangement
Anbefalede værdier i arrangement

Maximum
Net Heat Capacity
[kW]
Flue Gas Piping
Min. Dimensions
A [mm]
Chimney / Stack
Min. Dimensions
B [mm]
80 200 200
500 250 250
600 300 300
700 300 350
900 350 400
1200 350 450
1500 400 500
1700 450 500
2300 500 550
3500 550 600
4000 600 650
4500 650 700
5000 700 750
6000 700 800
7000 750 850
Note 1 Height minimum 2 meters above roof surface and any roof of any buildings in a distance of 100 meter or according to local requirements. For gas combustion these recommendations can often be less restrictive.  

 

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Note 2 Chimney should be supported sufficiently at bottom and at top based on strength calculations performed. Insulation thickness (2 x) according to local requirements, to be added the necessary diameter "B".
Note 3 Flue pas piping to be as short as possible, and bends as few as possible - preferable maximum two bends in the flue gas piping.

Angel of bends to be minimum 120° - everywhere !
Note 4 Above heat capacities are net output, based on TT BOILERS high standard efficiencies. Diameters given are approximate value. In case of doubts, use a size higher.